How flipping nerdawesome is this? A lamp that lights up when the International Space Station is visible!
[embed width="610"]http://vimeo.com/24859969[/embed]
so you can build one and code it yourself. I bet a lot of teachers would love to get one of these in their classrooms! ... and I want one too. But I'd wind up soldering my hand to the desk. Sigh.
Tip o' the LED to NASA's Twitter feed.